Resource Allocation with Shared Channel and Control Channel for LTE Downlink

摘要

UTRAN Long Term Evolution (LTE), marked as 4G LTE, is a standard for wireless communication developed by 3GPP, which is aiming to provide a spectral efficiency 2 to 4 times higher than its predecessor HSUPA/HSDPA Release 6. As a downlink access scheme for LTE, the Orthogonal Frequency Division Multiple Access (OFDMA) technology can allocate resources flexibly at the cost of additional control signals, so this will limit the throughput of the system. In this paper, we propose a new algorithm, named as Resource Allocation with Shared Channel and Control Channel (RA-SCCC) algorithm to be able to achieve the maximum possible throughput. The simulation result indicated two major conclusions: one is that the RA-SCCC algorithm in this paper could gain 40% ~ 80% throughput than the Roundup Robin algorithm and the other is that the RA-SCCC could provide the better fairness relative to the Max C/I algorithm.